[DimSum]

So I pulled the trigger on the BMS PowerBox Tuner a week ago, and finally had time to install it yesterday. At first, Map 3 didn't feel that great; however after driving the car for a day, it seems that the ECU has adapted much better before I installed it on the first day.

I have Scoops, K&N Filter w/ Charcoal Filter cut out. The BMS tuner is worth the $300.00 no doubt.
The car installed is the European 323i with Stage III air manifold found on the 330. The engine however is the N52 2.5L stock tuned at 200hp/180tq.
I also have the lastest MSD81 ECU factory flash for my car. No errors/No codes.

So with the added 30hp on the crank, the car feels a lot FASTER than before.
It’s no 335i but definitely damn faster than a Acura TSX or Civic SI.

I have to admit, this thing is FAST. It makes the car that much more powerful and responsive. You can actually feel the 15whp shown on the dyno result sheets. The car is much faster at all rpm bands and the initial launch is much improved from before.

I picked it up from Mike@N54Tuning.com, customer service/communication is A+. He was able to meet at my times and emailed me the instruction manual as soon as I got the unit!

I hope to see more mods for the N52 in the near future, but I have to admit. BMS effort for the PowerBox is definately a good start!

[heemry328i]

very nice to hear that! i cant wait to order mine!

[tolkino]

Congrats! do tell us about this stage III intake manifold

[ni8shadow]

Originally Posted by tolkino

Congrats! do tell us about this stage III intake manifold

+ 1

[DimSum]

Originally Posted by tolkino

Congrats! do tell us about this stage III intake manifold

The Canadian spec 323i N52B25 comes factory with the Stage III intake with Canadian flash to 200hp/180tq.
The European 325i is the exact same engine as the Canadian Spec 323i, except the Canadian spec 323i is de-tuned for North American standards.
Where primary and secondary cats come into place. Removal of the primary cats show a 15whp increase on the dyno.

Stock Figures for comparison.
325i EUR 2005-2007 2.5 L I6 215 bhp (160 kW; 218 PS) 185 lb·ft (251 N·m)
323i CA 2007+ 2.5 L I6 200 bhp (149 kW; 203 PS) 180 lb·ft (244 N·m)

[Yuzi]

My car is fast now

[im spencer]

So much hype about this thing yet there are so few reviews... waiting for more info before i pull the trigger

[lore2486]

Originally Posted by im spencer

So much hype about this thing yet there are so few reviews... waiting for more info before i pull the trigger

There are people who dont whant to flood the main page with threads about the same thing, there atleast 6 threads about the bms pbx, i have it and its awsome it realy lives to the hype. But i dont plan to do a review. Go ahead and buy one you wont regret it : )

[Mike@N54Tuning.com]

Originally Posted by im spencer

So much hype about this thing yet there are so few reviews... waiting for more info before i pull the trigger

<from my other thread>

Check out some of the latest independent reviews of the PowerBox

http://www.e90post.com/forums/showthread.php?t=319587

http://www.e90post.com/forums/showthread.php?t=319595

http://www.e90post.com/forums/showthread.php?t=319374

Mike

[ni8shadow]

Any plans for a pbx2 or 3? Can the engine handle more power?

[Mike@N54Tuning.com]

There isn't that much more you can squeeze out of a NA engine

Mike

[DimSum]

Originally Posted by Mike@N54Tuning.com

There isn't that much more you can squeeze out of a NA engine

Mike

Maybe the next step is small supercharger pushing low boost

[Bimmer Nerd]

Originally Posted by DimSum

Maybe the next step is small supercharger pushing low boost

if somebody can get past VANOS i am sure a lot of tuners will consider doing so, but vanos is your main problem in that category.

[Bimmer Nerd]

Originally Posted by im spencer

So much hype about this thing yet there are so few reviews... waiting for more info before i pull the trigger

My friend just got it, i got a test drive in it + did some runs against a stock 328i, I can only tell you one thing..................GET IT !!!!!

The BMS pbx got a bad start from a rolling start and it STILL took the stock 328i by 3-4 car lengths, wish i have taken a video off it, even from a dead stop you can also feel the car taking off faster.

[ni8shadow]

Or cams, headers, port and polish? They would be pricy though.

[DimSum]

Originally Posted by Bimmer Nerd

My friend just got it, i got a test drive in it + did some runs against a stock 328i, I can only tell you one thing..................GET IT !!!!!

The BMS pbx got a bad start from a rolling start and it STILL took the stock 328i by 3-4 car lengths, wish i have taken a video off it, even from a dead stop you can also feel the car taking off faster.

Originally Posted by Bimmer Nerd

if somebody can get past VANOS i am sure a lot of tuners will consider doing so, but vanos is your main problem in that category.

E46 was Vanos wasn't it? I think it's just a matter of time, I hope we see some small supercharger systems that push around 8psi... That would be sufficient.

[Bimmer Nerd]

Originally Posted by DimSum

E46 was Vanos wasn't it? I think it's just a matter of time, I hope we see some small supercharger systems that push around 8psi... That would be sufficient.

hmmm i can't really argue if e46 was vanos or not since i am not sure, but if it was i guess its different from the e90 because i heard a lot of tuners just can't seem to get around it.

[ni8shadow]

Pbx had a bad rolling start? As in u forgot to punch it or was there a delay/lag?

[lore2486]

Originally Posted by Bimmer Nerd

hmmm i can't really argue if e46 was vanos or not since i am not sure, but if it was i guess its different from the e90 because i heard a lot of tuners just can't seem to get around it.

E46 had dual stepless vanos for the m3 and regular dual vanos for the regular e46, the problem in the e90 is not the vanos. The actual problem is the valvetronic. Lets hope some one can crack it soon : )

[DimSum]

Originally Posted by ni8shadow

Pbx had a bad rolling start? As in u forgot to punch it or was there a delay/lag?

None on my side, if your driving on DS mode + Map3 and you punch it, you can easily spin the wheels

[ni8shadow]

Ahhh the wheel spin. Prob getting used to the throttle maps

[Yuzi]

Map 3 + 1st gear + on wet + DTC = wheels spin